#!/bin/bash
# =============================================================================
# packages/docker-compose/docker-compose.SlackBuild
#
# Packages the official prebuilt docker/compose v2 release binary — not
# built from source, see versions.env's DOCKER_COMPOSE_* block for why.
# `podman compose` (backing webui/plugins/podman/ajax/compose.php) has no
# compose implementation of its own; it shells out to an "external compose
# provider" it discovers by searching a fixed list of CLI-plugin
# directories for a binary literally named `docker-compose` (paths
# extracted from the pinned podman binary itself:
# `strings /usr/bin/podman | grep cli-plugins`). Without one present,
# every Compose panel action fails outright (found by live-testing against
# a real Unraid install — it only worked there because that host happened
# to already have Docker's own compose plugin from an unrelated setup).
#
# Installed to /usr/local/lib/docker/cli-plugins/docker-compose — one of
# podman's search paths, deliberately the /usr/local/ one rather than
# /usr/lib/docker/cli-plugins so this package never collides with (or
# gets silently shadowed by) a genuine Docker installation's own compose
# plugin on hosts that also run Unraid's built-in Docker support.
# =============================================================================

set -eu

REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
# shellcheck source=/dev/null
. "$REPO_ROOT/scripts/lib/slackbuild-common.sh"
# shellcheck source=/dev/null
. "$REPO_ROOT/versions.env"

VERSION="$DOCKER_COMPOSE_VERSION"
ARCH="$PKG_ARCH"
BUILD="$PKG_BUILD"
TAG="$PKG_TAG"

sb_init "docker-compose"

binary=$(sb_fetch_and_verify "$DOCKER_COMPOSE_SRC_URL" "$DOCKER_COMPOSE_SRC_SHA256" "docker-compose-$VERSION")

install -D -m 0755 "$binary" "$PKG/usr/local/lib/docker/cli-plugins/docker-compose"

# The release only ships the raw binary (+ checksum/signature files, no
# LICENSE/README asset) — write minimal doc metadata by hand instead of
# using sb_install_docs, which expects real files to copy from disk.
docdir="$PKG/usr/doc/docker-compose-$VERSION"
mkdir -p "$docdir"
{
  echo "docker-compose (docker/compose v2 CLI plugin) $VERSION"
  echo "https://github.com/docker/compose"
  echo "Prebuilt static binary, packaged as-is by unraid-podman — see"
  echo "versions.env for the pinned release URL and SHA256."
} > "$docdir/README"
{
  echo "Built by unraid-podman from upstream's prebuilt release binary."
  echo "Package: docker-compose $VERSION"
  echo "Built:   $(date -u +%Y-%m-%dT%H:%M:%SZ)"
} > "$docdir/unraid-podman.build-info"

sb_make_package "$VERSION" "$ARCH" "$BUILD" "$TAG"